U.S. patent number 10,996,438 [Application Number 16/073,464] was granted by the patent office on 2021-05-04 for imaging lens assembly.
This patent grant is currently assigned to ZHEJIANG SUNNY OPTICAL CO., LTD. The grantee listed for this patent is Zhejiang Sunny Optical Co., Ltd. Invention is credited to Yabin Hu, Saifeng Lv, Jianke Wenren.
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United States Patent |
10,996,438 |
Lv , et al. |
May 4, 2021 |
Imaging lens assembly
Abstract
The present disclosure discloses an imaging lens assembly which
includes, sequentially from an object side to an image side along
an optical axis, a first lens to a fifth lens. The first lens has a
positive refractive power and a convex object-side surface. The
second lens has a negative refractive power, a concave object-side
surface and a concave image-side surface. The third lens has a
negative refractive power. The fourth lens has a positive or a
negative refractive power. The fifth lens has a positive or a
negative refractive power, a concave object-side surface, and an
image-side surface of the fifth lens is a convex surface or a
plane. An air spacing T23 between the second lens and the third
lens on the optical axis and an air spacing T34 between the third
lens and the fourth lens on the optical axis satisfy:
1.0.ltoreq.T23/T34<2.0.
Inventors: |
Lv; Saifeng (Ningbo,
CN), Hu; Yabin (Ningbo, CN), Wenren;
Jianke (Ningbo, CN) |
Applicant: |
Name |
City |
State |
Country |
Type |
Zhejiang Sunny Optical Co., Ltd |
Ningbo |
N/A |
CN |
|
|
Assignee: |
ZHEJIANG SUNNY OPTICAL CO., LTD
(Ningbo, CN)
|
Family
ID: |
1000005530000 |
Appl.
No.: |
16/073,464 |
Filed: |
October 23, 2017 |
PCT
Filed: |
October 23, 2017 |
PCT No.: |
PCT/CN2017/107331 |
371(c)(1),(2),(4) Date: |
July 27, 2018 |
PCT
Pub. No.: |
WO2018/214396 |
PCT
Pub. Date: |
November 29, 2018 |
Prior Publication Data
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|
|
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Document
Identifier |
Publication Date |
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US 20210033819 A1 |
Feb 4, 2021 |
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Foreign Application Priority Data
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May 26, 2017 [CN] |
|
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201710383984.X |
May 26, 2017 [CN] |
|
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201720600009.5 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02B
27/0025 (20130101); G02B 13/02 (20130101); G02B
13/0045 (20130101); G02B 9/60 (20130101) |
Current International
Class: |
G02B
13/00 (20060101); G02B 9/60 (20060101); G02B
27/00 (20060101); G02B 13/02 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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105988186 |
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Oct 2016 |
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CN |
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106990508 |
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Jul 2017 |
|
CN |
|
Primary Examiner: Huang; Wen
Attorney, Agent or Firm: Hauptman Ham, LLP
Claims
What is claimed is:
1. An imaging lens assembly, comprising, sequentially from an
object side to an image side along an optical axis, a first lens, a
second lens, a third lens, a fourth lens and a fifth lens, wherein
the first lens has a positive refractive power, and an object-side
surface of the first lens is a convex surface; the second lens has
a negative refractive power, and an object-side surface and an
image-side surface of the second lens are concave surfaces; the
third lens has a negative refractive power; the fourth lens has a
positive refractive power or a negative refractive power; the fifth
lens has a positive refractive power or a negative refractive
power, an object-side surface of the fifth lens is a concave
surface, and an image-side surface of the fifth lens is a convex
surface or a plane; and an air spacing T23 between the second lens
and the third lens on the optical axis and an air spacing T34
between the third lens and the fourth lens on the optical axis
satisfy: 1.0.ltoreq.T23/T34<2.0, and half of a maximal
field-of-view HFOV of the imaging lens assembly satisfies:
HFOV.ltoreq.25.degree..
2. The imaging lens assembly according to claim 1, wherein an axial
distance TTL from the object-side surface of the first lens to an
image plane of the imaging lens assembly and an effective focal
length f of the imaging lens assembly satisfy:
TTL/f.ltoreq.1.0.
3. The imaging lens assembly according to claim 1, wherein an
effective focal length f of the imaging lens assembly and a focal
length f3 of the third lens satisfy: -1.ltoreq.f/f3.ltoreq.0.
4. The imaging lens assembly according to claim 1, wherein an abbe
number V4 of the fourth lens and an abbe number V5 of the fifth
lens satisfy: 28.ltoreq.|V4-V5|.
5. The imaging lens assembly according to claim 1, wherein an
effective focal length f of the imaging lens assembly and a focal
length f5 of the fifth lens satisfy: -1.5.ltoreq.f/f5.ltoreq.0.
6. The imaging lens assembly according to claim 1, wherein a focal
length f3 of the third lens and a focal length f4 of the fourth
lens satisfy: -11.ltoreq.(f3-f4)/(f3+f4).ltoreq.1.
7. An imaging lens assembly, comprising, sequentially from an
object side to an image side along an optical axis, a first lens, a
second lens, a third lens, a fourth lens and a fifth lens, wherein
the first lens has a positive refractive power, and an object-side
surface of the first lens is a convex surface; the second lens has
a negative refractive power, and an object-side surface and an
image-side surface of the second lens are concave surfaces; the
third lens has a negative refractive power; the fourth lens has a
positive refractive power or a negative refractive power; the fifth
lens has a positive refractive power or a negative refractive
power, an object-side surface of the fifth lens is a concave
surface, and an image-side surface of the fifth lens is a convex
surface or a plane; and an air spacing T23 between the second lens
and the third lens on the optical axis and an air spacing T34
between the third lens and the fourth lens on the optical axis
satisfy: 1.0.ltoreq.T23/T34<2.0, and an axial distance TTL from
the object-side surface of the first lens to an image plane of the
imaging lens assembly and an effective focal length f of the
imaging lens assembly satisfy: TTL/f.ltoreq.1.0.
8. The imaging lens assembly according to claim 7, wherein an
effective focal length f of the imaging lens assembly and a focal
length f3 of the third lens satisfy: -1.ltoreq.f/f3.ltoreq.0.
9. The imaging lens assembly according to claim 7, wherein an
effective focal length f of the imaging lens assembly and a focal
length f5 of the fifth lens satisfy: -1.5.ltoreq.f/f5.ltoreq.0.
10. The imaging lens assembly according to claim 7, wherein a focal
length f3 of the third lens and a focal length f4 of the fourth
lens satisfy: -11.ltoreq.(f3-f4)/(f3+f4).ltoreq.1.
11. An imaging lens assembly, comprising, sequentially from an
object side to an image side along an optical axis, a first lens, a
second lens, a third lens, a fourth lens and a fifth lens, wherein
the first lens has a positive refractive power, and an object-side
surface of the first lens is a convex surface; the second lens has
a negative refractive power, and an object-side surface and an
image-side surface of the second lens are concave surfaces; the
third lens has a negative refractive power; the fourth lens has a
positive refractive power or a negative refractive power; the fifth
lens has a positive refractive power or a negative refractive
power, an object-side surface of the fifth lens is a concave
surface, and an image-side surface of the fifth lens is a convex
surface or a plane; and an air spacing T23 between the second lens
and the third lens on the optical axis and an air spacing T34
between the third lens and the fourth lens on the optical axis
satisfy: 1.0.ltoreq.T23/T34<2.0, and an abbe number V4 of the
fourth lens and an abbe number V5 of the fifth lens satisfy:
28.ltoreq.|V4-V5|.
12. The imaging lens assembly according to claim 11, wherein an
effective focal length f of the imaging lens assembly and a focal
length f3 of the third lens satisfy: -1.ltoreq.f/f3.ltoreq.0.
13. The imaging lens assembly according to claim 11, wherein an
effective focal length f of the imaging lens assembly and a focal
length f5 of the fifth lens satisfy: -1.5.ltoreq.f/f5.ltoreq.0.
14. The imaging lens assembly according to claim 11, wherein a
focal length f3 of the third lens and a focal length f4 of the
fourth lens satisfy: -11.ltoreq.(f3-f4)/(f3+f4).ltoreq.1.
Description
RELATED APPLICATIONS
The present application is a National Phase of International
Application Number PCT/CN2017/107331, filed Oct. 23, 2017, and
claims the priority of China Application No. 201710383984.X, filed
May 26, 2017; and China Application No. 201720600009.5, filed May
26, 2017.
TECHNICAL FIELD
The present disclosure relates to an imaging lens assembly, and
more specifically to an imaging lens assembly including five
lenses.
BACKGROUND
As the science and technology develop, portable electronic products
are gradually rising, and portable electronic products having
camera functions are increasingly favored by people. For imaging
lens assemblies in the portable electronic products, higher
requirements on the image quality of the lens assemblies are
brought forward on the basis of satisfying miniaturization.
The newly proposed dual camera concept may combine wide-angle and
telephoto to achieve the purpose of zooming under the premise of
ensuring lightness and thinness of the electronic products, so that
the lens assembly may obtain a clearer image at a short distance or
at a long distance, which makes a user obtain a different visual
effect and a better user experience.
SUMMARY
According to an aspect, the present disclosure provides an imaging
lens assembly. The imaging lens assembly includes, sequentially
from an object side to an image side along an optical axis, a first
lens, a second lens, a third lens, a fourth lens and a fifth lens.
The first lens may have a positive refractive power, and an
object-side surface of the first lens is a convex surface. The
second lens may have a negative refractive power, and an
object-side surface and an image-side surface of the second lens
are concave surfaces. The third lens may have a negative refractive
power. The fourth lens may have a positive refractive power or a
negative refractive power. The fifth lens may have a positive
refractive power or a negative refractive power, an object-side
surface of the fifth lens is a concave surface, and an image-side
surface of the fifth lens is a convex surface or a plane. An air
spacing T23 between the second lens and the third lens on the
optical axis and an air spacing T34 between the third lens and the
fourth lens on the optical axis may satisfy:
1.0.ltoreq.T23/T34<2.0.
According to another aspect, the present disclosure provides an
imaging lens assembly. The imaging lens assembly includes,
sequentially from an object side to an image side along an optical
axis, a first lens, a second lens, a third lens, a fourth lens and
a fifth lens. The first lens may have a positive refractive power,
and an object-side surface of the first lens is a convex surface.
The second lens may have a negative refractive power, and an
object-side surface and an image-side surface of the second lens
are concave surfaces. The third lens may have a negative refractive
power. The fourth lens may have a positive refractive power or a
negative refractive power. The fifth lens may have a positive
refractive power or a negative refractive power, an object-side
surface of the fifth lens is a concave surface, and an image-side
surface of the fifth lens is a convex surface or a plane. A
combined focal length f12 of the first lens and the second lens and
a combined focal length f45 of the fourth lens and the fifth lens
may satisfy: -1.ltoreq.f12/f45.ltoreq.0.
According to another aspect, the present disclosure provides an
imaging lens assembly. The imaging lens assembly includes,
sequentially from an object side to an image side along an optical
axis, a first lens, a second lens, a third lens, a fourth lens and
a fifth lens. The first lens may have a positive refractive power,
and an object-side surface of the first lens is a convex surface.
The second lens may have a negative refractive power, and an
object-side surface and an image-side surface of the second lens
are concave surfaces. The third lens may have a negative refractive
power. The fourth lens may have a positive refractive power or a
negative refractive power. The fifth lens may have a positive
refractive power or a negative refractive power, an object-side
surface of the fifth lens is a concave surface, and an image-side
surface of the fifth lens is a convex surface or a plane. A focal
length f1 of the first lens, a focal length f2 of the second lens
and a focal length f5 of the fifth lens may satisfy:
0.ltoreq.f1*f2/f5.ltoreq.6.
In an implementation, half of a maximal field-of-view HFOV of the
imaging lens assembly may satisfy: HFOV.ltoreq.25.degree..
In an implementation, an axial distance TTL from the object-side
surface of the first lens to an image plane of the imaging lens
assembly and an effective focal length f of the imaging lens
assembly may satisfy: TTL/f.ltoreq.1.0.
In an implementation, the focal length f2 of the second lens and
the focal length f1 of the first lens may satisfy:
-4.ltoreq.f2/f1.ltoreq.-1.
In an implementation, the effective focal length f of the imaging
lens assembly and a focal length f3 of the third lens may satisfy:
-1.ltoreq.f/f3.ltoreq.0.
In an implementation, the effective focal length f of the imaging
lens assembly and the focal length f5 of the fifth lens may
satisfy: -1.5.ltoreq.f/f5.ltoreq.0.
In an implementation, the focal length f3 of the third lens and a
focal length f4 of the fourth lens may satisfy:
-11.ltoreq.(f3-f4)/(f3+f4).ltoreq.1.
In an implementation, an abbe number V4 of the fourth lens and an
abbe number V5 of the fifth lens may satisfy:
28.ltoreq.|V4-V5|.
In an implementation, a radius of curvature R1 of the object-side
surface of the first lens and a radius of curvature R2 of an
image-side surface of the first lens may satisfy:
-0.5.ltoreq.R1/R2.ltoreq.0.2.
In an implementation, the radius of curvature R1 of the object-side
surface of the first lens and a radius of curvature R4 of the
image-side surface of the second lens may satisfy:
-3.ltoreq.(R1+R4)/(R1-R4).ltoreq.-1.
In the present disclosure, multiple lenses (e.g., five lenses) are
used. By reasonably distributing the refractive powers and the
surface types of the lenses in the imaging lens assembly, and the
spacing distances between the lenses, the imaging lens assembly may
possess at least one of the following beneficial effects:
achieving miniaturization of the lens assembly;
ensuring a telephoto characteristic of the lens assembly;
reducing sensitivity of the system;
facilitating processing and molding of the lens assembly;
correcting various aberrations; and
improving resolution and an image quality of the lens assembly.
BRIEF DESCRIPTION OF THE DRAWINGS
After reading detailed descriptions of following non-limiting
embodiments given with reference to the accompanying drawings,
other features, objectives and advantages of the present disclosure
will become more apparent. In the accompanying drawings:
FIG. 1 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 1 of the present
disclosure;
FIGS. 2A-2D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 1;
FIG. 3 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 2 of the present
disclosure;
FIGS. 4A-4D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 2;
FIG. 5 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 3 of the present
disclosure;
FIGS. 6A-6D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 3;
FIG. 7 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 4 of the present
disclosure;
FIGS. 8A-8D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 4;
FIG. 9 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 5 of the present
disclosure;
FIGS. 10A-10D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 5;
FIG. 11 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 6 of the present
disclosure;
FIGS. 12A-12D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 6;
FIG. 13 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 7 of the present
disclosure;
FIGS. 14A-14D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 7;
FIG. 15 is a schematic structural diagram illustrating an imaging
lens assembly according to Embodiment 8 of the present disclosure;
and
FIGS. 16A-16D respectively illustrate a longitudinal aberration
curve, an astigmatic curve, a distortion curve and a lateral color
curve of the imaging lens assembly according to Embodiment 8.
DETAILED DESCRIPTION OF EMBODIMENTS
For a better understanding of the present disclosure, various
aspects of the present disclosure will be described in more detail
with reference to the accompanying drawings. It should be
understood that the detailed description is merely an illustration
for the exemplary implementations of the present disclosure rather
than a limitation to the scope of the present disclosure in any
way. Throughout the specification, the same reference numerals
designate the same elements. The expression "and/or" includes any
and all combinations of one or more of the associated listed
items.
It should be noted that in the present specification, the
expressions, such as "first," "second" and "third" are only used to
distinguish one feature from another, without indicating any
limitation to the feature. Thus, the first lens discussed below may
also be referred to as the second lens or the third lens without
departing from the teachings of the present disclosure.
In the accompanying drawings, the thicknesses, sizes and shapes of
the lenses have been slightly exaggerated for the convenience of
explanation. Specifically, shapes of spherical surfaces or aspheric
surfaces shown in the accompanying drawings are shown by examples.
That is, the shapes of the spherical surfaces or the aspheric
surfaces are not limited to the shapes of the spherical surfaces or
the aspheric surfaces shown in the accompanying drawings. The
accompanying drawings are merely illustrative and not strictly
drawn to scale.
In the present disclosure, the surface closest to the object in
each lens is referred to as the object-side surface, and the
surface closest to the image plane in each lens is referred to as
the image-side surface.
It should be further understood that the terms "comprising,"
"including," "having" and variants thereof, when used in the
specification, specify the presence of stated features, entireties,
steps, operations, elements and/or components, but do not exclude
the presence or addition of one or more other features, entireties,
steps, operations, elements, components and/or combinations
thereof. In addition, expressions, such as "at least one of," when
preceding a list of listed features, modify the entire list of
features rather than an individual element in the list. Further,
the use of "may," when describing the implementations of the
present disclosure, relates to "one or more implementations of the
present disclosure." Also, the term "exemplary" is intended to
refer to an example or illustration.
Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meaning as commonly
understood by those of ordinary skill in the art to which the
present disclosure belongs. It should be further understood that
terms, such as those defined in commonly used dictionaries, should
be interpreted as having a meaning that is consistent with their
meaning in the context of the relevant art and will not be
interpreted in an idealized or overly formal sense unless expressly
so defined herein.
It should also be noted that the embodiments in the present
disclosure and the features in the embodiments may be combined with
each other on a non-conflict basis. The present disclosure will be
described below in detail with reference to the accompanying
drawings and in combination with the embodiments.
Characteristics, principles and other aspects of the present
disclosure will be described below in detail.
An imaging lens assembly according to exemplary implementations of
the present disclosure has, for example, five lenses, i.e., a first
lens, a second lens, a third lens, a fourth lens and a fifth lens.
The five lenses are arranged in sequence from an object side to an
image side along an optical axis.
According to the exemplary implementations of the present
disclosure, the first lens may have a positive refractive power,
and an object-side surface of the first lens is a convex surface.
The second lens may have a negative refractive power, an
object-side surface of the second lens is a concave surface, and an
image-side surface of the second lens is a concave surface. The
third lens may have a negative refractive power. The fourth lens
may have a positive refractive power or a negative refractive
power. The fifth lens may have a positive refractive power or a
negative refractive power, an object-side surface of the fifth lens
is a concave surface, and an image-side surface of the fifth lens
is a convex surface or a plane.
In the exemplary implementations, half of a maximal field-of-view
HFOV of the imaging lens assembly may satisfy:
HFOV.ltoreq.25.degree., and more specifically, HFOV may further
satisfy: 22.2.degree..ltoreq.HFOV.ltoreq.23.9.degree..
In the application, distribution of refractive powers of the lenses
may be reasonably optimized. A focal length f1 of the first lens
and a focal length f2 of the second lens may satisfy:
-4.ltoreq.f2/f1.ltoreq.-1, and more specifically, f1 and f2 may
further satisfy: -3.29.ltoreq.f2/f1.ltoreq.-1.62. The reasonable
distribution of the refractive powers may effectively correct a
chromatic aberration of the lens assembly, and reduce a high-order
spherical aberration of a telephoto lens assembly.
An effective focal length f of the imaging lens assembly and a
focal length f3 of the third lens may satisfy:
-1.ltoreq.f/f3.ltoreq.0, and more specifically, f and f3 may
further satisfy: -0.95.ltoreq.f/f3.ltoreq.-0.01. The reasonable
distribution of the refractive power of the third lens is
conductive to correcting a high-order aberration of the lens
assembly.
The effective focal length f of the imaging lens assembly and a
focal length f5 of the fifth lens may satisfy:
-1.5.ltoreq.f/f5.ltoreq.0, and more specifically, f and f5 may
further satisfy: -1.43.ltoreq.f/f5.ltoreq.-0.27. The reasonable
distribution of the refractive power of the fifth lens is
conductive to miniaturization of the lens assembly. Meanwhile, the
reasonable distribution of the refractive power of the fifth lens
is also conductive to reducing an astigmatism of the system.
The focal length f3 of the third lens and a focal length f4 of the
fourth lens may satisfy: -11.ltoreq.(f3-f4)/(f3+f4).ltoreq.1, and
more specifically, f3 and f4 may further satisfy:
-10.92.ltoreq.(f3-f4)/(f3+f4).ltoreq.0.69. By reasonably
distributing the refractive powers of the third lens and the fourth
lens, the high-order aberration of the lens assembly may be
balanced.
The focal length f1 of the first lens, the focal length f2 of the
second lens and the focal length f5 of the fifth lens may satisfy:
0.ltoreq.f1*f2/f5.ltoreq.6 mm, and more specifically, f1, f2 and f5
may further satisfy: 0.89 mm.ltoreq.f1*f2/f5.ltoreq.5.53 mm. By
reasonably distributing the refractive powers of the first lens,
the second lens and the fifth lens, a primary aberration and a
high-order aberration of the system are balanced, which makes the
lens assembly have a telephoto characteristic while the lens
assemble is effectively miniaturized.
In the exemplary implementations, a combined focal length f12 of
the first lens and the second lens and a combined focal length f45
of the fourth lens and the fifth lens may satisfy:
-1.ltoreq.f12/f45.ltoreq.0, and more specifically, f12 and f45 may
further satisfy: -0.70.ltoreq.f12/f45.ltoreq.-0.22. The combined
focal length f12 and the combined focal length f45 are reasonably
distributed to ensure the telephoto characteristic of the lens
assembly to achieve a telephoto function of the lens assembly.
Meanwhile, the reasonable distribution of the combined focal length
f12 and the combined focal length f45 may also make the lens
assembly have a small depth of field and a larger magnifying
power.
The imaging lens assembly according to the exemplary
implementations of the present disclosure may maintain the
miniaturization of the lens assembly while satisfying the telephoto
characteristic of the lens assembly. Specifically, an axial
distance TTL from the object-side surface of the first lens to an
image plane of the imaging lens assembly and the effective focal
length f of the imaging lens assembly satisfy: TTL/f.ltoreq.1.0,
and more specifically, TTL and f may further satisfy:
0.88.ltoreq.TTL/f.ltoreq.0.94.
In addition, radii of curvature of the mirror surfaces may also be
reasonably arranged. For example, a radius of curvature R1 of the
object-side surface of the first lens and a radius of curvature R2
of an image-side surface of the first lens may satisfy:
-0.5.ltoreq.R1/R2.ltoreq.0.2, and more specifically, R1 and R2 may
further satisfy: -0.40.ltoreq.R1/R2.ltoreq.0.11. The reasonable
restriction to the shape of the first lens may facilitate
processing and molding of the lens assembly, meanwhile, also
facilitate the achieving of the miniaturization of the lens
assembly.
The radius of curvature R1 of the object-side surface of the first
lens and a radius of curvature R4 of the image-side surface of the
second lens may satisfy: -3.ltoreq.(R1+R4)/(R1-R4).ltoreq.-1, and
more specifically, R1 and R4 may further satisfy:
-2.97.ltoreq.(R1+R4)/(R1-R4).ltoreq.-1.26. The radius of curvature
R1 of the object-side surface of the first lens and the radius of
curvature R4 of the image-side surface of the second lens are
reasonably arranged, which is conductive to balancing a high-order
spherical aberration and a high-order astigmatism of the system and
reducing sensitivity of the system.
In the exemplary implementations, an abbe number V4 of the fourth
lens and an abbe number V5 of the fifth lens may satisfy:
28.ltoreq.|V4-V5|, and more specifically, V4 and V5 may further
satisfy: |V4-V5|=35.70. When the abbe number V4 of the fourth lens
and the abbe number V5 of the fifth lens satisfy 28.ltoreq.|V4-V5|,
it is conductive to correcting a chromatic aberration of the system
and balancing a high-order aberration, thereby improving an image
quality of the lens assembly.
Alternatively, the imaging lens assembly according to the present
disclosure may also include an optical filter for correcting a
color deviation. The optical filter may be disposed, for example,
between the fifth lens and the image plane. It should be understood
by those skilled in the art that the optical filter may be disposed
at other positions as required.
The imaging lens assembly according to the above implementations of
the present disclosure may use multiple lenses, for example, five
lenses as described above. By reasonably distributing the
refractive powers and the surface types of the lenses, the axial
spacing distances between the lenses, etc., it is possible to
ensure the telephoto characteristic of the lens assembly, reduce
the sensitivity of the system, ensure the miniaturization of the
lens assembly, and improve the image quality, thus making the
imaging lens assembly more conductive to the production and
processing and applicable to the portable electronic products. In
the implementations of the present disclosure, at least one of the
mirror surfaces of the lenses is an aspheric mirror surface. The
aspheric lens is characterized in that its curvature continuously
changes from the center of the lens to the periphery. In contrast
to a spherical lens having a constant curvature from the center of
the lens to the periphery, the aspheric lens has a better
radius-of-curvature characteristic, and has advantages of improving
a distortion aberration and an astigmatic aberration. The use of
the aspheric lens can eliminate as much as possible the aberrations
that occur during the imaging, thereby improving the image quality
of the lens assembly.
However, it should be understood by those skilled in the art that
the various results and advantages described in the present
specification may be obtained by changing the number of the lenses
forming the lens assembly without departing from the technical
solution claimed by the present disclosure. For example, although
the five lenses are described as an example in the implementations,
the imaging lens assembly is not limited to include five lenses. If
desired, the imaging lens assembly may also include other numbers
of lenses.
Specific embodiments of the imaging lens assembly that may be
applied to the above implementations are further described below
with reference to the accompanying drawings.
Embodiment 1
An imaging lens assembly according to Embodiment 1 of the present
disclosure is described below with reference to FIGS. 1-2D. FIG. 1
is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 1 of the present disclosure.
As shown in FIG. 1, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the object side
and the first lens E1, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 1 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 1. The radius of curvature
and the thickness are shown in millimeters (mm).
TABLE-US-00001 TABLE 1 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite STO spherical infinite
-0.4461 S1 aspheric 1.4329 0.6889 1.546 56.11 -0.9090 S2 aspheric
-14.3853 0.0689 -26.0563 S3 aspheric -44.8622 0.2000 1.666 20.41
-96.8496 S4 aspheric 3.7236 0.9078 0.9038 S5 aspheric -8.8827
0.2000 1.546 56.11 89.3317 S6 aspheric 6.9290 0.7513 36.9521 S7
aspheric -20.8201 0.4016 1.666 20.41 99.0000 S8 aspheric -4.5035
0.4246 3.2800 S9 aspheric -2.0922 0.4223 1.546 56.11 -0.1227 S10
aspheric -93.4964 0.0423 99.0000 S11 spherical infinite 0.2100
1.517 64.17 S12 spherical infinite 0.6237 S13 spherical
infinite
As may be obtained from Table 1, the radius of curvature R1 of the
object-side surface S1 of the first lens E1 and the radius of
curvature R2 of the image-side surface S2 of the first lens E1
satisfy: R1/R2=-0.10. The radius of curvature R1 of the object-side
surface S1 of the first lens E1 and the radius of curvature R4 of
the image-side surface S4 of the second lens E2 satisfy:
(R1+R4)/(R1-R4)=-2.25. The abbe number V4 of the fourth lens E4 and
the abbe number V5 of the fifth lens E5 satisfy: |V4-V5|=35.70. The
air spacing T23 between the second lens E2 and the third lens E3 on
the optical axis and the air spacing T34 between the third lens E3
and the fourth lens E4 on the optical axis satisfy:
T23/T34=1.21.
In this embodiment, five lenses are used as an example. By
reasonably distributing the focal length and the surface type of
each lens, and the spacings between the lenses, a wide-angle lens
assembly is combined with a telephoto lens assembly while the
miniaturization of the lens assembly is ensured, to achieve the
purpose of zooming. The surface type x of each aspheric surface is
defined by the following formula:
.times..times..times. ##EQU00001##
Here, x is the distance sagittal height to the vertex of the
aspheric surface when the aspheric surface is at a position of a
height h along the optical axis; c is the paraxial curvature of the
aspheric surface, and c=1/R (i.e., the paraxial curvature c is the
reciprocal of the radius of curvature R in Table 1 above); k is the
conic coefficient (given in Table 1 above); and Ai is the
correction coefficient of the i.sup.th order of the aspheric
surface. Table 2 below shows the high-order coefficients A.sub.4,
A.sub.6, A.sub.8, A.sub.10, A.sub.12, A.sub.14, A.sub.16 and
A.sub.18 applicable to the aspheric mirror surfaces S1-S10 in
Embodiment 1.
TABLE-US-00002 TABLE 2 surface number A4 A6 A8 A10 A12 A14 A16 A18
S1 3.5600E-02 2.6012E-03 4.6500E-02 -1.6240E-01 3.4090E-01
4.0850E-01 2.5830E-01 -6.820- 0E-02 S2 7.5536E-03 -8.9100E-02
4.4440E-01 -1.2267E+00 1.9560E+00 4.8087E+00 9.- 0420E-01
4.9140E-01 S3 -1.6660E-04 -1.4510E-01 8.6700E-01 -2.6942E+00
4.8760E+00 -5.0892E+00 2.8505E+00 -6.6490E-01 S4 1.0700E-02
-1.0380E-01 7.1790E-01 -2.5050E+00 5.1778E+00 -6.1968E+00
3.9910E+00 4.0784E+00 S5 -3.4500E-02 -2.8420E-01 1.7139E+00
-6.8422E+00 1.6812E+01 -2.5282E+01 2.1028E+01 -74561E+00 S6
-3.6890E-03 -2.3400E-02 8.8700E-02 9.0900E-02 -5.9980E-01
9.1080E-01 -6.0440E-01 1.4290E-01 S7 -8.9030E-03 -1.8640E-01
3.8060E-01 -5.7860E-01 5.6240E-01 -3.1810E-01 9.6500E-02 4.2200E-02
S8 4.1000E-02 -2.2380E-01 4.0050E-01 4.9000E-01 3.7670E-01
4.7030E-01 4.1400E-02 4.1950E-03 S9 -4.3700E-02 8.1500E-02
-1.0400E-02 -3.9500E-02 3.7500E-02 4.5500E-02 3.1998E-03
-2.6710E-04 S10 -1.8840E-01 2.1320E-01 -1.7170E-01 9.2400E-02
-3.2000E-02 6.5775E-03 -6.7700E-04 2.2985E-05
Table 3 shows the focal lengths f1-f5 of the lenses, the effective
focal length f of the imaging lens assembly, the axial distance TTL
from the object-side surface S1 of the first lens E1 to the image
plane S13, and the half of the diagonal length ImgH of the
effective pixel area on the image plane S13 in Embodiment 1.
TABLE-US-00003 TABLE 3 f1(mm) 2.42 f(mm) 5.59 f2(mm) -5.15 TTL(mm)
4.94 f3(mm) -7.10 ImgH(mm) 2.30 f4(mm) 8.54 f5(mm) -3.93
As may be seen from Table 3, the axial distance TTL from the
object-side surface S1 of the first lens E1 to the image plane S13
and the effective focal length f of the imaging lens assembly
satisfy: TTL/f=0.88. The focal length f2 of the second lens E2 and
the focal length f1 of the first lens E1 satisfy: f2/f1=-2.12. The
effective focal length f of the imaging lens assembly and the focal
length f3 of the third lens E3 satisfy: f/f3=-0.79. The focal
length f1 of the first lens E1, the focal length f2 of the second
lens E2 and the focal length f5 of the fifth lens E5 satisfy:
f1*f2/f5=3.18 mm. The effective focal length f of the imaging lens
assembly and the focal length f5 of the fifth lens E5 satisfy:
f/f5=-1.43. The focal length f3 of the third lens E3 and the focal
length f4 of the fourth lens E4 satisfy: (f3-f4)/(f3+f4)=-10.92. In
addition, the combined focal length f12 of the first lens E1 and
the second lens E2 and the combined focal length f45 of the fourth
lens E4 and the fifth lens E5 satisfy: f12/f45=-0.48.
In this embodiment, the half of the maximal field-of-view HFOV of
the imaging lens assembly satisfies: HFOV=22.2.degree..
FIG. 2A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 1, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 2B illustrates
anastigmatic curve of the imaging lens assembly according to
Embodiment 1, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 2C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 1, representing amounts of distortion at different
viewing angles. FIG. 2D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 1, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
2A-2D that the imaging lens assembly according to Embodiment 1 can
achieve a good image quality.
Embodiment 2
An imaging lens assembly according to Embodiment 2 of the present
disclosure is described below with reference to FIGS. 3-4D. In this
embodiment and the following embodiments, for the purpose of
brevity, the description of parts similar to those in Embodiment 1
will be omitted. FIG. 3 is a schematic structural diagram
illustrating the imaging lens assembly according to Embodiment 2 of
the present disclosure.
As shown in FIG. 3, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the object side
and the first lens E1, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 4 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 2. The radius of curvature
and the thickness are shown in millimeters (mm). Table 5 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 2. Table 6 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane S13, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 2. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00004 TABLE 4 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite STO spherical infinite
-0.3904 S1 aspheric 1.4626 0.6513 1.546 56.11 -1.0179 S2 aspheric
29.7850 0.1769 -13.8097 S3 aspheric -6.5233 0.2500 1.666 20.41
34.2296 S4 aspheric 12.9149 0.8647 -25.3234 S5 aspheric 9.6370
0.3520 1.546 56.11 -23.8512 S6 aspheric 4.1419 0.5914 -27.9493 S7
aspheric 40.3700 0.3640 1.546 56.11 39.6109 S8 aspheric 7.4313
0.1816 -22.6831 S9 aspheric -13.4467 0.4223 1.666 20.41 0.1163 S10
aspheric -1132.5420 0.0300 -99.0000 S11 spherical infinite 0.2100
1.517 64.17 S12 spherical infinite 1.0276 S13 spherical
infinite
TABLE-US-00005 TABLE 5 surface number A4 A6 A8 A10 A12 A14 A16 A18
S1 -2.2800E-02 2.1490E-01 -7.2780E-01 1.4601E+00 -.6958E+00
1.0647E+00 -2.8110E-01 4.0500E-02 S2 7.5536E-03 -8.9100E-02 4
4440E-01 -1.2267E+00 1.9560E+00 -1.8087E+00 9.0420E-01 -1.9140E-01
S3 -1.6660E-04 -1.4510E-01 8.6700E-01 -2.6942E+00 4.8760E+00
-5.0892E+00 2- .8505E+00 -6.6490E-01 S4 1.0700E-02 -1.0380E-01
7.1790E-01 -2.5050E+00 5.1778E+00 -6.1968E+00 3- .9910E+00
-1.0784E+00 S5 -3.4500E-02 -2.8420E-01 1.7139E+00 -6.8422E+00
1.6812E+01 -2.5282E+01 2- .1028E+01 -7.4561E+00 S6 -3.6890E-03
-2.3400E-02 8.8700E-02 9.0900E-02 -5.9980E-01 9.1080E-01
-6.0440E-01 1.4290E-01 S7 -8.9030E-03 -1.8640E-01 3.8060E-01
-5.7860E-01 5.6240E-01 -3.1810E-01 9- .6500E-02 -1.2200E-02 S8
4.1000E-02 -2.2380E-01 4.0050E-01 4.9000E-01 3.7670E-01 -1.7030E-01
4.1400E-02 4.1950E-03 S9 -4.3700E-02 8.1500E-02 -1.0400E-02
-3.9500E-02 3.7500E-02 -1.5500E-02 3.1998E-03 -2.6710E-04 S10
-1.8840E-01 2.1320E-01 -1.7170E-01 9.2400E-02 -3.2000E-02
6.5775E-03 -6.7700E-04 2.2985E-05
TABLE-US-00006 TABLE 6 f1(mm) 2.79 f(mm) 5.60 f2(mm) -6.47 TTL(mm)
5.12 f3(mm) -13.61 ImgH(mm) 2.26 f4(mm) -16.75 f5(mm) -20.42
FIG. 4A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 2, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 4B illustrates
anastigmatic curve of the imaging lens assembly according to
Embodiment 2, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 4C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 2, representing amounts of distortion at different
viewing angles. FIG. 4D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 2, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
4A-4D that the imaging lens assembly according to Embodiment 2 can
achieve a good image quality.
Embodiment 3
An imaging lens assembly according to Embodiment 3 of the present
disclosure is described below with reference to FIGS. 5-6D. FIG. 5
is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 3 of the present disclosure.
As shown in FIG. 5, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the second lens E2
and the third lens E3, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 7 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 3. The radius of curvature
and the thickness are shown in millimeters (mm). Table 8 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 3. Table 9 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane 513, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 3. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00007 TABLE 7 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite S1 aspheric 1.5175
0.9164 1.546 56.11 -0.5586 S2 aspheric -3.7931 0.0324 -63.8779 S3
aspheric -11.1162 0.2350 1.666 20.41 13.5275 S4 aspheric 3.1362
0.1294 -22.9991 STO spherical infinite 0.8023 0.0000 S5 aspheric
-48.7511 0.2350 1.546 56.11 -94.4854 S6 aspheric 3.3101 0.4949
-43.5357 S7 aspheric -5.7621 0.4954 1.666 20.41 15.4631 S8 aspheric
-3.8242 0.3282 -6.7984 S9 aspheric -3.7906 0.4591 1.546 56.11
-11.1457 S10 spherical -65.5878 0.3551 89.0690 S11 spherical
infinite 0.2127 1.517 64.17 S12 spherical infinite 0.2543 S13
spherical infinite
TABLE-US-00008 TABLE 8 surface number A4 A6 A8 A10 A12 S1
1.6413E-02 -7.1098E-03 4.9867E-02 -1.4407E-01 2.5274E-01 S2
2.0415E-02 -1.4457E-01 5.8614E-01 -1.2963E+00 1.7518E+00 S3
1.1783E-02 -2.2414E-01 9.3574E-01 -1.8655E+00 2.0681E+00 S4
-7.0200E-02 1.8040E-01 -1.1189E+00 6.2346E+00 -2.0284E+01 S5
4.6825E-01 -4.7055E-01 8.1064E+00 -5.3289E+01 2.1570E+02 S6
-2.9235E-01 -9.3267E-04 1.6951E+00 -8.1277E+00 2.4742E+01 S7
-1.1347E-01 -1.3992E-01 3.1407E-01 -8.1257E-01 1.2098E+00 S8
-6.7118E-02 -2.1774E-01 7.4704E-01 -1.5054E+00 1.8428E+00 S9
-1.0773E-01 -2.4198E-01 9.0784E-01 -1.2717E+00 9.4986E-01 S10
-1.2600E-01 -3.5839E-02 1.7777E-01 -1.6847E-01 6.9866E-02 surface
number A14 A16 A18 A20 S1 -2.7675E-01 1.8306E-01 -6.7468E-02
1.0457E-02 S2 -1.4944E+00 7.8119E-01 -2.2760E-01 2.8240E-02 S3
-1.1038E+00 8.1496E-03 2.6523E-01 -8.5260E-02 S4 3.9070E+01
4.4112E+01 2.6922E+01 -6.8324E+00 S5 -5.4754E+02 8.4835E+02
-7.3222E+02 2.6905E+02 S6 4.6733E+01 5.3730E+01 -3.4262E+01
9.2031E+00 S7 -1.2427E+00 1.0250E+00 4.5845E-01 5.9978E-02 S8
-1.4618E+00 7.3984E-01 -2.1132E-01 2.5195E-02 S9 -4.0820E-01
1.0119E-01 -1.3405E-02 7.2806E-04 S10 -9.0549E-03 -2.8798E-03
1.1489E-03 -1.1506E-04
TABLE-US-00009 TABLE 9 f1(mm) 2.11 f(mm) 5.40 f2(mm) -4.71 TTL(mm)
4.95 f3(mm) -5.67 ImgH(mm) 2.40 f4(mm) 15.48 f5(mm) -7.39
FIG. 6A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 3, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 6B illustrates
anastigmatic curve of the imaging lens assembly according to
Embodiment 3, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 6C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 3, representing amounts of distortion at different
viewing angles. FIG. 6D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 3, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
6A-6D that the imaging lens assembly according to Embodiment 3 can
achieve a good image quality.
Embodiment 4
An imaging lens assembly according to Embodiment 4 of the present
disclosure is described below with reference to FIGS. 7-8D. FIG. 7
is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 4 of the present disclosure.
As shown in FIG. 7, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the object side
and the first lens E1, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 10 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 4. The radius of curvature
and the thickness are shown in millimeters (mm). Table 11 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 4. Table 12 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane S13, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 4. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00010 TABLE 10 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite STO spherical infinite
-0.3789 S1 aspheric 1.4466 0.9778 1.546 56.11 -1.1634 S2 aspheric
13.3379 0.1788 -13.8097 S3 aspheric -38.1311 0.2839 1.666 20.41
-17.2932 S4 aspheric 3.4170 0.7278 -22.7025 S5 aspheric 3.1450
0.2500 1.546 56.11 -47.9338 S6 aspheric 3.0314 0.7014 -48.5016 S7
aspheric 15.8451 0.1611 1.546 56.11 37.9757 S8 aspheric 12.8504
0.1180 -46.2747 S9 aspheric -4.7581 0.4244 1.666 20.41 -5.2260 S10
aspheric -1241.0189 0.0834 -99.0000 S11 spherical infinite 0.2111
1.517 64.17 S12 spherical infinite 0.8823 S13 spherical
infinite
TABLE-US-00011 TABLE 11 surface number A4 A6 A8 A10 A12 A14 A16 A18
S1 4.0917E-02 -1.9082E-02 1.2767E-01 -3.8230E-01 6.4939E-01
-6.4031E-01 3- .3494E-01 -7.4079E-02 S2 -7.6548E-02 3.1787E-02
1.3601E-01 4.9397E-01 5.2300E-01 -2.5017E-01 5.6643E-02 4.9478E-03
S3 -1.1890E-01 3.4086E-01 -4.2288E-01 7.7400E-01 -2.4148E+00
3.8964E+00 -2.8197E+00 7.5576E-01 S4 1.2235E-02 6.2866E-01
-2.9905E+00 1.3955E+01 4.1134E+01 7.0555E+01 -6.4654E+01 2.4743E+01
S5 -1.1875E-01 -1.4006E-01 1.3481E+00 -4.4313E+00 9.9481E+00
-1.3810E+01 1- .0286E+01 -3.1576E+00 S6 -1.1459E-01 -8.5350E-02
1.0017E+00 -2.6063E+00 4.9953E+00 -5.9648E+00 3- .7450E+00
-9.5364E-01 S7 1.3444E-01 -2.0077E+00 3.3802E+00 -2.6534E+00
1.1909E+00 -3.4634E-01 7- .3159E-02 -9.1541E-03 S8 7.5370E-01
-3.1492E+00 5.5603E+00 -5.7539E+00 3.6769E+00 -1.4172E+00 2-
.9989E-01 -2.6615E-02 S9 2.6012E-01 -6.6132E-01 1.1209E+00
-1.1444E+00 6.9281E-01 -2.4398E-01 4- .6269E-02 -3.6657E-03 S10
-2.0048E-01 1.0326E-01 8.6343E-02 -1.2645E-01 5.8179E-02
-1.1099E-02 4.9446E-04 5.5441E-05
TABLE-US-00012 TABLE 12 f1(mm) 2.89 f(mm) 5.60 f2(mm) -4.69 TTL(mm)
5.00 f3(mm) -687.47 ImgH(mm) 2.26 f4(mm) -126.95 f5(mm) -7.17
FIG. 8A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 4, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 8B illustrates
anastigmatic curve of the imaging lens assembly according to
Embodiment 4, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 8C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 4, representing amounts of distortion at different
viewing angles. FIG. 8D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 4, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
8A-8D that the imaging lens assembly according to Embodiment 4 can
achieve a good image quality.
Embodiment 5
An imaging lens assembly according to Embodiment 5 of the present
disclosure is described below with reference to FIGS. 9-10D. FIG. 9
is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 5 of the present disclosure.
As shown in FIG. 9, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the second Lens E2
and the third lens E3, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 13 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 5. The radius of curvature
and the thickness are shown in millimeters (mm). Table 14 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 5. Table 15 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane S13, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 5. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00013 TABLE 13 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite S1 aspheric 1.5395
0.9138 1.546 56.11 -0.5579 S2 aspheric -4.0592 0.0748 -59.8754 S3
aspheric -11.0061 0.2350 1.666 20.41 21.4878 S4 aspheric 3.1052
0.1281 -20.7191 STO spherical infinite 0.7943 0.0000 S5 aspheric
-28.1509 0.2350 1.546 56.11 -99.0000 S6 aspheric 4.3482 0.4900
-88.9915 S7 aspheric -5.7766 0.5778 1.666 20.41 15.0833 S8 aspheric
-3.0779 0.2748 -10.5228 S9 aspheric -2.8381 0.3803 1.546 56.11
-10.5384 S10 aspheric -32.7559 0.3677 99.0000 S11 spherical
infinite 0.2106 1.517 64.17 S12 spherical infinite 0.2677 S13
spherical infinite
TABLE-US-00014 TABLE 14 surface number A4 A6 A8 A10 A12 S1
1.5324E-02 -6.1635E-03 3.5694E-02 -8.8750E-02 1.3528E-01 S2
3.9700E-03 -2.8207E-02 1.5623E-01 -3.6247E-01 4.7349E-01 S3
-5.7449E-03 -1.0044E-01 5.2359E-01 -9.2786E-01 3.1155E-01 S4
-5.7335E-02 1.3575E-01 -1.0082E+00 6.6445E+00 -2.4436E+01 S5
-4.5665E-01 -4.8836E-01 7.8199E+00 -5.2970E+01 2.2376E+02 S6
-2.9206E-01 -5.2057E-02 1.3304E+00 -5.2741E+00 1.5098E+01 S7
-1.1606E-01 1.9581E-01 -1.5513E+00 4.9322E+00 -9.7733E+00 S8
-1.2630E-01 3.8321E-01 -1.2964E+00 2.2242E+00 -2.2816E+00 S9
-2.8286E-01 9.3346E-01 -2.2525E+00 3.2091E+00 -2.7697E+00 S10
-2.1864E-01 4.4156E-01 -7.7441E-01 8.5727E-01 -5.9758E-01 surface
number A14 A16 A18 A20 S1 -1.3032E-01 7.6610E-02 -2.5634E-02
3.6612E-03 S2 -3.8490E-01 1.9328E-01 -5.5263E-02 6.9572E-03 S3
1.5597E+00 -2.7985E+00 1.9755E+00 -5.2873E-01 S4 5.2291E+01
-6.5128E+01 4.3706E+01 -1.2172E+01 S5 -5.9253E+02 9.5621E+02
-8.5800E+02 3.2725E+02 S6 -2.7298E+01 2.9851E+01 -1.7792E+01
4.3207E+00 S7 1.2608E+01 -1.0189E+01 4.7051E+00 -9.4788E-01 S8
1.4679E+00 -5.9148E-01 1.4079E-01 -1.5512E-02 S9 1.4671E+00
4.6549E-01 8.1220E-02 -6.0015E-03 S10 2.6332E-01 -7.1573E-02
1.0988E-02 -7.2909E-04
TABLE-US-00015 TABLE 15 f1(mm) 2.17 f(mm) 5.29 f2(mm) -4.66 TTL(mm)
4.95 f3(mm) -6.88 ImgH(mm) 2.37 f4(mm) 9.11 f5(mm) -5.92
FIG. 10A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 5, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 10B illustrates an
astigmatic curve of the imaging lens assembly according to
Embodiment 5, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 10C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 5, representing amounts of distortion at different
viewing angles. FIG. 10D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 5, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
10A-10D that the imaging lens assembly according to Embodiment 5
can achieve a good image quality.
Embodiment 6
An imaging lens assembly according to Embodiment 6 of the present
disclosure is described below with reference to FIGS. 11-12D. FIG.
11 is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 6 of the present disclosure.
As shown in FIG. 11, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the object side
and the first lens E1, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 16 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 6. The radius of curvature
and the thickness are shown in millimeters (mm). Table 17 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 6. Table 18 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane S13, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 6. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00016 TABLE 16 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite STO spherical infinite
-0.3690 S1 aspheric 1.4431 0.6475 1.546 56.11 -2.2182 S2 aspheric
32.4666 0.0248 99.0000 S3 aspheric -166.2255 0.2500 1.666 20.41
-35.4614 S4 aspheric 5.9927 0.8914 -97.2571 S5 aspheric -8.1358
0.2500 1.546 56.11 -99.0000 S6 aspheric 9.6113 0.6400 -99.0000 S7
aspheric -4.5129 0.3935 1.666 20.41 -99.0000 S8 aspheric -3.1487
0.5638 5.1796 S9 aspheric -2.3519 0.4249 1.546 56.11 -1.2830 S10
aspheric infinite 0.0601 99.0020 S11 spherical infinite 0.2113
1.517 64.17 S12 spherical infinite 0.6292 S13 spherical
infinite
TABLE-US-00017 TABLE 17 surface number A4 A6 A8 A10 A12 A14 A16 A18
S1 4.0543E-02 -2.2800E-0 2.1494E-01 -7.2775E-01 1.4601E+00
-1.6958E+00 1.0647E+00 -2.8111E-01 S2 -4.8014E-02 7.8489E-02
-1.1591E-01 1.7754E-01 -1.5955E-01 -6.4725E-03 1.1218E-01
-6.7459E-02 S3 -7.7945E-02 2.4256E-01 -2.6703E-01 1.6161E-01
1.1369E-01 -4.3631E-01 4.3202E-01 -1.5994E-01 S4 -5.3131E-02
2.0400E-01 -2.2591E-01 6.7490E-02 4.1558E-01 -1.0069E+00 9.7729E-01
-3.5897E-01 S5 -1.7237E-01 -6.9298E-02 1.0069E+00 4.0996E+00
9.7401E+00 -1.3805E+01 1.0554E+01 -3.4222E+00 S6 -1.0209E-01
6.8242E-02 1.7415E-01 -3.9912E-01 6.9745E-01 -7.0983E-01 3.-
3310E-01 -5.6043E-02 S7 -7.4889E-02 -3.2129E-01 4.4840E-01
-4.1948E-01 4.3086E-01 -2.8861E-01 9.5124E-02 -1.1953E-02 S8
1.5708E-01 -4.2920E-01 3.7555E-01 -2.5629E-01 1.7389E-01
-9.6736E-02 3.2166E-02 4.5272E-03 S9 4.5788E-02 -5.6410E-02
6.8694E-02 -2.5937E-01 3.5329E-01 -2.2590E-01 6.9785E-02
-8.4565E-03 S10 -1.1578E-01 7.4402E-02 -5.0690E-02 1.6343E-03
2.4176E-02 -1.6572E-02 4.4209E-03 4.2382E-04
TABLE-US-00018 TABLE 18 f1(mm) 2.75 f(mm) 5.56 f2(mm) -8.67 TTL(mm)
4.99 f3(mm) -8.03 ImgH(mm) 2.30 f4(mm) 14.01 f5(mm) -4.31
FIG. 12A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 6, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 12B illustrates an
astigmatic curve of the imaging lens assembly according to
Embodiment 6, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 12C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 6, representing amounts of distortion at different
viewing angles. FIG. 12D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 6, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
12A-12D that the imaging lens assembly according to Embodiment 6
can achieve a good image quality.
Embodiment 7
An imaging lens assembly according to Embodiment 7 of the present
disclosure is described below with reference to FIGS. 13-14D. FIG.
13 is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 7 of the present disclosure.
As shown in FIG. 13, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the object side
and the first lens E1, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 19 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 7. The radius of curvature
and the thickness are shown in millimeters (mm). Table 20 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 7. Table 21 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane S13, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 7. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00019 TABLE 19 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite STO spherical infinite
-0.3693 S1 aspheric 1.4417 0.6490 1.546 56.11 -2.5422 S2 aspheric
26.7691 0.0230 47.7927 S3 aspheric -166.2255 0.2500 1.666 20.41
-99.0000 S4 aspheric 6.2927 0.8954 -92.1283 S5 aspheric -9.4785
0.2500 1.546 56.11 -99.0000 S6 aspheric 6.8416 0.5748 -99.0000 S7
aspheric -4.5431 0.3881 1.666 20.41 -99.0000 S8 aspheric -3.1861
0.6308 5.2036 S9 aspheric -2.5496 0.4249 1.546 56.11 -2.7246 S10
aspheric -1481.4587 0.0603 99.0020 S11 spherical infinite 0.2113
1.517 64.17 S12 spherical infinite 0.6285 S13 spherical
infinite
TABLE-US-00020 TABLE 20 surface number A4 A6 A8 A10 A12 S1
1.0065E-01 -4.7822E-02 1.8232E-01 4.8712E-01 7.8410E-01 S2
-2.5929E-01 8.4747E-01 -5.0696E-01 -4.4616E+00 1.3381E+01 S3
-1.7193E-01 8.0602E-01 -5.9759E-01 -4.0239E+00 1.2676E+01 S4
1.1223E-01 1.3678E-01 -6.3479E-01 2.1294E+00 -5.9273E+00 S5
2.2976E-02 1.8975E-02 -6.0274E-01 2.8138E+00 -7.4188E+00 S6
1.0113E-01 9.0249E-02 -1.0792E+00 4.1697E+00 -9.1879E+00 S7
-2.5328E-01 6.5383E-01 -3.1363E+00 1.0116E+01 -2.3285E+01 S8
-7.3773E-02 4.0579E-01 -1.5608E+00 3.5152E+00 -5.2498E+00 S9
-3.3439E-01 1.0758E+00 -2.2513E+00 3.0471E+00 -2.6531E+00 S10
-3.6417E-01 7 4434E-01 -1.1087E+00 1.0635E+00 -6.5485E-01 surface
number A14 A16 A18 A20 S1 -7.8743E-01 4.5032E-01 -1.1768E-01
0.0000E+00 S2 -1.6720E+01 1.0053E+01 -2.3892E+00 0.0000E+00 S3
-1.5970E+01 9.4943E+00 -2.1822E+00 0.0000E+00 S4 1.1249E+01
-1.1531E+01 4.7386E+00 0.0000E+00 S5 1.1437E+01 -9.4757E+00
3.1889E+00 0.0000E+00 S6 1.2106E+01 -8.6684E+00 2.6001E+00
0.0000E+00 S7 3.5397E+01 -3.3659E+01 1.7893E+01 -3.9725E+00 S8
5.1034E+00 -3.1079E+00 1.0760E+00 -1.5991E-01 S9 1.4667E+00
-4.9608E-01 9.3581E-02 -7.5463E-03 S10 2.5695E-01 -6.2111E-02
8.4360E-03 -4.9316E-04
TABLE-US-00021 TABLE 21 f1(mm) 2.77 f(mm) 5.58 f2(mm) -9.09 TTL(mm)
4.99 f3(mm) -7.24 ImgH(mm) 2.30 f4(mm) 14.36 f5(mm) -4.68
FIG. 14A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 7, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 14B illustrates an
astigmatic curve of the imaging lens assembly according to
Embodiment 7, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 14C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 7, representing amounts of distortion at different
viewing angles. FIG. 14D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 7, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
14A-14D that the imaging lens assembly according to Embodiment 7
can achieve a good image quality.
Embodiment 8
An imaging lens assembly according to Embodiment 8 of the present
disclosure is described below with reference to FIGS. 15-16D. FIG.
15 is a schematic structural diagram illustrating the imaging lens
assembly according to Embodiment 8 of the present disclosure.
As shown in FIG. 15, the imaging lens assembly includes, along an
optical axis, five lenses E1-E5 arranged in sequence from an object
side to an image side. The first lens E1 has an object-side surface
S1 and an image-side surface S2. The second lens E2 has an
object-side surface S3 and an image-side surface S4. The third lens
E3 has an object-side surface S5 and an image-side surface S6. The
fourth lens E4 has an object-side surface S7 and an image-side
surface S8. The fifth lens E5 has an object-side surface S9 and an
image-side surface S10. Alternatively, the imaging lens assembly
may further include an optical filter E6 having an object-side
surface S11 and an image-side surface S12. In the imaging lens
assembly of this embodiment, a diaphragm STO for limiting light
beams may also be disposed, for example, between the second lens E2
and the third lens E3, to improve the image quality. Light from an
object sequentially passes through the surfaces S1-S12 and finally
forms an image on an image plane S13.
Table 22 shows the surface type, the radius of curvature, the
thickness, the material and the conic coefficient of each lens of
the imaging lens assembly in Embodiment 8. The radius of curvature
and the thickness are shown in millimeters (mm). Table 23 shows the
high-order coefficients of each aspheric mirror surface in
Embodiment 8. Table 24 shows the focal lengths f1-f5 of the lenses,
the effective focal length f of the imaging lens assembly, the
axial distance TTL from the object-side surface S1 of the first
lens E1 to the image plane S13, and the half of the diagonal length
ImgH of the effective pixel area on the image plane S13 in
Embodiment 8. Here, the surface type of each aspheric surface may
be defined by the formula (1) given in Embodiment 1.
TABLE-US-00022 TABLE 22 material surface surface radius of
refractive abbe conic number type curvature thickness index number
coefficient OBJ spherical infinite infinite S1 aspheric 1.4615
0.9066 1.546 56.11 -0.5564 S2 aspheric -8.2798 0.0584 -62.5439 S3
aspheric -18.0061 0.2350 1.666 20.41 31.6285 S4 aspheric 3.7552
0.1281 -21.6059 STO spherical infinite 0.7943 0.0000 S5 aspheric
-187.3800 0.2513 1.546 56.11 99.0000 S6 aspheric 3.3911 0.4900
-83.9143 S7 aspheric -5.8340 0.6797 1.666 20.41 7.2908 S8 aspheric
-3.3391 0.2039 -8.3409 S9 aspheric -3.2455 0.3807 1.546 56.11
-11.4036 S10 aspheric -30.8919 0.3557 89.9211 S11 spherical
infinite 0.2106 1.517 64.17 S12 spherical infinite 0.2557 S13
spherical infinite
TABLE-US-00023 TABLE 23 surface number A4 A6 A8 A10 A12 S1
1.8905E-02 -9.8823E-03 6.4286E-02 -1.7333E-01 2.9271E-01 S2
-2.7594E-02 1.9051E-01 -5.8519E-01 1.3355E+00 -2.2266E+00 S3
-8.7660E-02 3.6810E-01 -1.0840E+00 2.9926E+00 -6.2030E+00 S4
-4.1953E-02 3.0292E-01 -1.5617E+00 7.1124E+00 -2.0167E+01 S5
-4.5548E-01 -1.9325E-01 3.6485E+00 -2.1342E+01 7.7867E+01 S6
-1.6046E-01 -6.5932E-01 3.5376E+00 -1.1554E+01 2.7212E+01 S7
-9.8858E-02 -4.2485E-02 -3.7683E-01 1.4249E+00 -3.0263E+00 S8
-6.6181E-02 4.2388E-02 -2.9661E-01 5.5383E-01 -5.5267E-01 S9
-1.6839E-01 3.1101E-01 -6.9496E-01 1.0192E+00 -8.9221E-01 S10
-0.161762925 1.9532E-01 -0.27162823 2.8605E-01 -1.9757E-01 surface
number A14 A16 A18 A20 S1 -3.1297E-01 2.0222E-01 -7.2620E-02
1.0645E-02 S2 2.4887E+00 -1.7424E+00 6.8481E-01 -1.1497E-01 S3
8.6367E+00 -7.4665E+00 3.6007E+00 -7.3767E-01 S4 3.3034E+01
-2.7298E+01 6.5057E+00 2.6526E+00 S5 -1.8156E+02 2.6432E+02
-2.1825E+02 7.7387E+01 S6 -4.3219E+01 4.4056E+01 -2.5843E+01
6.5591E+00 S7 4.0019E+00 -3.1814E+00 1.4354E+00 -2.8671E-01 S8
3.2933E-01 -1.2030E-01 2.6364E-02 -2.7810E-03 S9 4.6697E-01
-1.4323E-01 2.3781E-02 -1.6540E-03 S10 8.5845E-02 -2.2765E-02
3.3797E-03 -2.1530E-04
TABLE-US-00024 TABLE 24 f1(mm) 2.35 f(mm) 5.29 f2(mm) -5.63 TTL(mm)
4.95 f3(mm) -6.10 ImgH(mm) 2.36 f4(mm) 10.56 f5(mm) -6.68
FIG. 16A illustrates a longitudinal aberration curve of the imaging
lens assembly according to Embodiment 8, representing deviations of
focal points of light of different wavelengths converged after
passing through an imaging lens assembly. FIG. 16B illustrates an
astigmatic curve of the imaging lens assembly according to
Embodiment 8, representing a curvature of a tangential image plane
and a curvature of a sagittal image plane. FIG. 16C illustrates a
distortion curve of the imaging lens assembly according to
Embodiment 8, representing amounts of distortion at different
viewing angles. FIG. 16D illustrates a lateral color curve of the
imaging lens assembly according to Embodiment 8, representing
deviations of different image heights on an image plane after light
passes through the imaging lens assembly. It can be seen from FIGS.
16A-16D that the imaging lens assembly according to Embodiment 8
can achieve a good image quality.
To sum up, Embodiments 1-8 respectively satisfy the relationships
shown in Table 25 below.
TABLE-US-00025 TABLE 25 Conditional Embodiment expression 1 2 3 4 5
6 7 8 HFOV (.degree.) 22.2 22.3 23.8 22.3 23.9 22.3 22.3 23.9
T23/T34 1.21 1.46 1.88 1.04 1.88 1.39 1.56 1.88 TTL/f 0.88 0.91
0.92 0.89 0.94 0.90 0.89 0.94 f2/f1 -2.12 -2.31 -1.72 -1.62 -1.66
-3.16 -3.29 -1.97 f12/f45 -0.48 -0.45 -0.26 -0.70 -0.25 -0.58 -0.52
-0.22 f/f3 -0.79 -0.41 -0.95 -0.01 -0.77 -0.69 -0.77 -0.87 |V4 -
V5| 35.70 35.70 35.70 35.70 35.70 35.70 35.70 35.70 f1*f2/f5 3.18
0.89 1.04 1.89 1.37 5.53 5.38 1.64 (mm) (R1 + R4)/ -2.25 -1.26
-2.88 -2.47 -2.97 -1.63 -1.59 -2.27 (R1 - R4) f/f5 -1.43 -0.27
-0.73 -0.78 -0.93 -1.29 -1.19 -0.79 (f3 - f4)/ -10.92 -0.10 -2.16
0.69 -7.19 -3.68 -3.03 -3.73 (f3 + f4) R1/R2 -0.10 0.05 -0.40 0.11
-0.38 0.04 0.05 -0.18
The present disclosure further provides an imaging device, having a
photosensitive element which may be a photosensitive charge-coupled
device (CCD) or a complementary metal-oxide semiconductor (CMOS)
element. The imaging device may be an independent imaging device
such as a digital camera, or may be an imaging module integrated in
a mobile electronic device such as a mobile phone. The imaging
device is equipped with the imaging lens assembly described
above.
The foregoing is only a description for the preferred embodiments
of the present disclosure and the applied technical principles. It
should be appreciated by those skilled in the art that the
inventive scope of the present disclosure is not limited to the
technical solution formed by the particular combinations of the
above technical features. The inventive scope should also cover
other technical solutions formed by any combinations of the above
technical features or equivalent features thereof without departing
from the concept of the invention, such as technical solutions
formed by replacing the features as disclosed in the present
disclosure with (but not limited to) technical features with
similar functions.
* * * * *